Skullclamp is almost never used..
you may also want to run
4 sprouting instead of 2 scatter 2 sprout..

You can play at your own pace. Optimal mana/creature curve.
you can usually wait till turn 4.. play a glimpse.. a few kobolds.. then a sprout for mostly all the lands in your deck.. then maybe a mob justice and a bravado in one turn for 12-16 damage.

kobolds+sprouting to thin out your deck.
Kyren to do massive damage each turn.
Mob justice for a cheap cost killer.
Bravado to play on your ornithopter for an easy 8/8 flier.

It basically relies on a potentially turn 1 death pits, followed by a yawmoth's will..

The 2 sometimes connect.. but holding back with a kobold deck is kind of silly.. in the right direction though,... and the ratio of 0cc to mana is flawless considering he's not using any spirit guides or land grants.

The Problem is it has 2 separate goals... holding kobolds and blowing them up after they hit play..

option2: play a ton of them.. use sol rings and ashnods to make a huge riptide token...

I also say that riptide replicator is awful anyway you slice it...
say you sacrifice 5 kobolds for 10 mana..
cost is 4X, then X to pump one out.. so 10 mana for a 6 counters that your opponent has 2 turns to destroy..(sickness, mana constraints, untapping, etc)

I guess ideally i could use both brain freeze opposition, mob justice, and kyren.. but it f's up the mana and you'll not onnly be holding kobolds, but enchantmentts with double cost.. in order to tackle that.. you'd have to run all dual lands.. and then you might as well make a nigh unbeatable sliver deck.

The only one I know to have seriously performed was Clamp of Kher Keep, which got out Carnival of Souls, dropped Kobolds and used the black mana to Skullclamp them over and over, eventually casting Dark Ritual and Tendrils of Agony...

They could perhaps work with something like Opposition, although there isn't much of a reason to use Kobolds over their artifact cousins (Shield Sphere, Phyrexian Walker, and Ornithopter) unless Skullclamp is involved...